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Intro

This workflow translates a YouTube video's title and description into several languages with OpenAI, then writes those translations back to the video as native YouTube localizations. This helps you reach a wider, multilingual audience without manual copy-paste.

This page is a step-by-step course support: everything you need to rebuild the workflow manually, node by node, live on stream. All values are copy-paste ready.

Flow schema

Run workflow (Manual Trigger)
   -> Configuration (Set)
   -> Fetch video information (YouTube)
   -> Prepare target languages (Code)
   -> AI translator (Agent)
        - subnode: OpenAI Chat Model (language model)
        - subnode: Translation output parser (structured output)
   -> Update video localization (HTTP Request - PUT)
   -> Build localization URL (Set)

Prerequisites & credentials

You need two credentials in n8n:

Create the YouTube OAuth2 credential (one time)

1. Go to console.cloud.google.com and create a project.
2. In APIs & Services > Library, enable YouTube Data API v3.